xquery version "1.0";
declare namespace request="http://exist-db.org/xquery/request";
declare namespace xmldb="http://exist-db.org/xquery/xmldb";
let $name := request:get-parameter("name", "")
(: The first time store the document holding the names :)
let $collection := xmldb:collection("xmldb:exist:///db", "admin", "")
let $dummy :=
if ( not ( doc( "/db/names.xml" )) ) then
xmldb:store($collection, "names.xml", )
else
(: Create an XUpdate document :)
let $xupdate :=
{$name}
let $dummy2 :=
if ( $name and not ( doc( "/db/names.xml" )/names/name = $name ) ) then
xmldb:update($collection, $xupdate)
else
let $names-from-db := doc( "/db/names.xml" )
let $names := $names-from-db
return
XQuery-XUpdate Example
Hello { $names } !
See the XQuery source of this page